/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-e5469eb [2021-01-20 14:47:46,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-20 14:47:46,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-20 14:47:46,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-20 14:47:46,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-20 14:47:46,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-20 14:47:46,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-20 14:47:46,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-20 14:47:46,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-20 14:47:46,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-20 14:47:46,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-20 14:47:46,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-20 14:47:46,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-20 14:47:46,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-20 14:47:46,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-20 14:47:46,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-20 14:47:46,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-20 14:47:46,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-20 14:47:46,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-20 14:47:46,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-20 14:47:46,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-20 14:47:46,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-20 14:47:46,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-20 14:47:46,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-20 14:47:46,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-20 14:47:46,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-20 14:47:46,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-20 14:47:46,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-20 14:47:46,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-20 14:47:46,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-20 14:47:46,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-20 14:47:46,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-20 14:47:46,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-20 14:47:46,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-20 14:47:46,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-20 14:47:46,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-20 14:47:46,213 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-01-20 14:47:46,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-20 14:47:46,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-20 14:47:46,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-20 14:47:46,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-20 14:47:46,267 INFO L138 SettingsManager]: * Use SBE=true [2021-01-20 14:47:46,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-20 14:47:46,267 INFO L138 SettingsManager]: * sizeof long=4 [2021-01-20 14:47:46,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-20 14:47:46,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-01-20 14:47:46,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-20 14:47:46,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-20 14:47:46,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-20 14:47:46,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-20 14:47:46,270 INFO L138 SettingsManager]: * sizeof long double=12 [2021-01-20 14:47:46,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-20 14:47:46,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-20 14:47:46,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-20 14:47:46,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-20 14:47:46,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-20 14:47:46,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-01-20 14:47:46,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-20 14:47:46,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:47:46,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-20 14:47:46,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-20 14:47:46,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-20 14:47:46,272 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-20 14:47:46,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-20 14:47:46,273 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-01-20 14:47:46,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-20 14:47:46,273 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2021-01-20 14:47:46,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-20 14:47:46,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-20 14:47:46,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-20 14:47:46,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-20 14:47:46,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-20 14:47:46,684 INFO L275 PluginConnector]: CDTParser initialized [2021-01-20 14:47:46,685 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2021-01-20 14:47:46,760 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92089f99b/3c97cf81bd054318b3b928daf1eb0d89/FLAG93d967949 [2021-01-20 14:47:47,484 INFO L306 CDTParser]: Found 1 translation units. [2021-01-20 14:47:47,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.opt.i [2021-01-20 14:47:47,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92089f99b/3c97cf81bd054318b3b928daf1eb0d89/FLAG93d967949 [2021-01-20 14:47:47,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92089f99b/3c97cf81bd054318b3b928daf1eb0d89 [2021-01-20 14:47:47,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-20 14:47:47,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-01-20 14:47:47,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-20 14:47:47,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-20 14:47:47,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-20 14:47:47,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:47:47" (1/1) ... [2021-01-20 14:47:47,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f5b3967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:47, skipping insertion in model container [2021-01-20 14:47:47,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 02:47:47" (1/1) ... [2021-01-20 14:47:47,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-20 14:47:47,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-20 14:47:48,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:47:48,305 INFO L203 MainTranslator]: Completed pre-run [2021-01-20 14:47:48,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-20 14:47:48,532 INFO L208 MainTranslator]: Completed translation [2021-01-20 14:47:48,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48 WrapperNode [2021-01-20 14:47:48,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-20 14:47:48,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-20 14:47:48,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-20 14:47:48,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-20 14:47:48,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (1/1) ... [2021-01-20 14:47:48,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (1/1) ... [2021-01-20 14:47:48,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-20 14:47:48,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-20 14:47:48,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-20 14:47:48,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-20 14:47:48,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (1/1) ... [2021-01-20 14:47:48,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (1/1) ... [2021-01-20 14:47:48,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (1/1) ... [2021-01-20 14:47:48,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (1/1) ... [2021-01-20 14:47:48,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (1/1) ... [2021-01-20 14:47:48,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (1/1) ... [2021-01-20 14:47:48,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (1/1) ... [2021-01-20 14:47:48,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-20 14:47:48,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-20 14:47:48,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-20 14:47:48,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-20 14:47:48,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-20 14:47:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-20 14:47:48,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-01-20 14:47:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-20 14:47:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-20 14:47:48,809 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-01-20 14:47:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-01-20 14:47:48,810 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-01-20 14:47:48,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-01-20 14:47:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-01-20 14:47:48,811 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-01-20 14:47:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-20 14:47:48,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-01-20 14:47:48,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-20 14:47:48,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-20 14:47:48,813 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-01-20 14:47:49,284 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-20 14:47:49,285 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-20 14:47:49,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:47:49 BoogieIcfgContainer [2021-01-20 14:47:49,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-20 14:47:49,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-20 14:47:49,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-20 14:47:49,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-20 14:47:49,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 02:47:47" (1/3) ... [2021-01-20 14:47:49,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c881bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:47:49, skipping insertion in model container [2021-01-20 14:47:49,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 02:47:48" (2/3) ... [2021-01-20 14:47:49,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c881bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 02:47:49, skipping insertion in model container [2021-01-20 14:47:49,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 02:47:49" (3/3) ... [2021-01-20 14:47:49,296 INFO L111 eAbstractionObserver]: Analyzing ICFG safe024_tso.opt.i [2021-01-20 14:47:49,311 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-01-20 14:47:49,312 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-20 14:47:49,316 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-20 14:47:49,317 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-01-20 14:47:49,354 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,355 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,355 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,355 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,356 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,356 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,356 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,357 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,357 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,358 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,358 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,359 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,359 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,359 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,360 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,360 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,361 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,362 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,362 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,363 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,366 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,366 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,366 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,373 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,373 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,376 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,376 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,377 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,377 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-01-20 14:47:49,380 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-01-20 14:47:49,393 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-01-20 14:47:49,416 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-20 14:47:49,416 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-20 14:47:49,416 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-20 14:47:49,416 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-20 14:47:49,417 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-20 14:47:49,417 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-20 14:47:49,417 INFO L383 AbstractCegarLoop]: Minimize is NONE [2021-01-20 14:47:49,417 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-20 14:47:49,429 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 80 transitions, 175 flow [2021-01-20 14:47:50,401 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:50,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-01-20 14:47:50,493 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:50,494 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:47:50,495 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:50,501 INFO L82 PathProgramCache]: Analyzing trace with hash 960913987, now seen corresponding path program 1 times [2021-01-20 14:47:50,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:50,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473901262] [2021-01-20 14:47:50,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:50,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473901262] [2021-01-20 14:47:50,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:50,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:47:50,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632247724] [2021-01-20 14:47:50,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:47:50,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:51,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:47:51,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:47:51,028 INFO L87 Difference]: Start difference. First operand has 9849 states, 9847 states have (on average 3.6144003249720726) internal successors, (35591), 9848 states have internal predecessors, (35591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:51,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:51,608 INFO L93 Difference]: Finished difference Result 12201 states and 42465 transitions. [2021-01-20 14:47:51,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:47:51,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-01-20 14:47:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:51,671 INFO L225 Difference]: With dead ends: 12201 [2021-01-20 14:47:51,672 INFO L226 Difference]: Without dead ends: 4606 [2021-01-20 14:47:51,673 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:47:51,674 INFO L78 Accepts]: Start accepts. Automaton has 4606 states. Word has length 43 [2021-01-20 14:47:51,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:51,676 INFO L481 AbstractCegarLoop]: Abstraction has 4606 states. [2021-01-20 14:47:51,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:51,676 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states. [2021-01-20 14:47:51,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-01-20 14:47:51,691 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:51,691 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:47:51,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-20 14:47:51,691 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:51,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:51,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1551930462, now seen corresponding path program 1 times [2021-01-20 14:47:51,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:51,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817435274] [2021-01-20 14:47:51,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:51,981 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2021-01-20 14:47:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:52,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817435274] [2021-01-20 14:47:52,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:52,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:52,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903861806] [2021-01-20 14:47:52,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:52,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:52,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:52,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:52,039 INFO L87 Difference]: Start difference. First operand 4606 states. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:52,372 INFO L93 Difference]: Finished difference Result 5726 states and 19296 transitions. [2021-01-20 14:47:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:47:52,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-01-20 14:47:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:52,401 INFO L225 Difference]: With dead ends: 5726 [2021-01-20 14:47:52,401 INFO L226 Difference]: Without dead ends: 3031 [2021-01-20 14:47:52,403 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-01-20 14:47:52,403 INFO L78 Accepts]: Start accepts. Automaton has 3031 states. Word has length 45 [2021-01-20 14:47:52,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:52,404 INFO L481 AbstractCegarLoop]: Abstraction has 3031 states. [2021-01-20 14:47:52,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:52,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3031 states. [2021-01-20 14:47:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-01-20 14:47:52,417 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:52,417 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:47:52,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-20 14:47:52,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:52,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:52,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2078104249, now seen corresponding path program 1 times [2021-01-20 14:47:52,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:52,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440455200] [2021-01-20 14:47:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:52,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440455200] [2021-01-20 14:47:52,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:52,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-20 14:47:52,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545359212] [2021-01-20 14:47:52,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-20 14:47:52,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:52,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-20 14:47:52,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-20 14:47:52,682 INFO L87 Difference]: Start difference. First operand 3031 states. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:52,896 INFO L93 Difference]: Finished difference Result 3719 states and 12009 transitions. [2021-01-20 14:47:52,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-01-20 14:47:52,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-01-20 14:47:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:52,919 INFO L225 Difference]: With dead ends: 3719 [2021-01-20 14:47:52,919 INFO L226 Difference]: Without dead ends: 2767 [2021-01-20 14:47:52,920 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:47:52,920 INFO L78 Accepts]: Start accepts. Automaton has 2767 states. Word has length 48 [2021-01-20 14:47:52,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:52,922 INFO L481 AbstractCegarLoop]: Abstraction has 2767 states. [2021-01-20 14:47:52,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states. [2021-01-20 14:47:52,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-01-20 14:47:52,954 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:52,955 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:47:52,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-20 14:47:52,955 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:52,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:52,956 INFO L82 PathProgramCache]: Analyzing trace with hash 234797092, now seen corresponding path program 1 times [2021-01-20 14:47:52,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:52,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630926972] [2021-01-20 14:47:52,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:53,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630926972] [2021-01-20 14:47:53,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:53,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:53,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842979516] [2021-01-20 14:47:53,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:53,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:53,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:53,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:53,130 INFO L87 Difference]: Start difference. First operand 2767 states. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:53,325 INFO L93 Difference]: Finished difference Result 2773 states and 8670 transitions. [2021-01-20 14:47:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-01-20 14:47:53,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-01-20 14:47:53,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:53,341 INFO L225 Difference]: With dead ends: 2773 [2021-01-20 14:47:53,341 INFO L226 Difference]: Without dead ends: 1981 [2021-01-20 14:47:53,342 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-01-20 14:47:53,342 INFO L78 Accepts]: Start accepts. Automaton has 1981 states. Word has length 49 [2021-01-20 14:47:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:53,343 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states. [2021-01-20 14:47:53,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states. [2021-01-20 14:47:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-01-20 14:47:53,349 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:53,349 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:47:53,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-20 14:47:53,349 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:53,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:53,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1561578237, now seen corresponding path program 1 times [2021-01-20 14:47:53,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:53,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356268701] [2021-01-20 14:47:53,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:53,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356268701] [2021-01-20 14:47:53,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:53,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-01-20 14:47:53,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830594783] [2021-01-20 14:47:53,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-01-20 14:47:53,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:53,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-01-20 14:47:53,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-01-20 14:47:53,492 INFO L87 Difference]: Start difference. First operand 1981 states. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:53,770 INFO L93 Difference]: Finished difference Result 1504 states and 4437 transitions. [2021-01-20 14:47:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-01-20 14:47:53,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-01-20 14:47:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:53,778 INFO L225 Difference]: With dead ends: 1504 [2021-01-20 14:47:53,778 INFO L226 Difference]: Without dead ends: 1072 [2021-01-20 14:47:53,779 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-01-20 14:47:53,779 INFO L78 Accepts]: Start accepts. Automaton has 1072 states. Word has length 51 [2021-01-20 14:47:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:53,780 INFO L481 AbstractCegarLoop]: Abstraction has 1072 states. [2021-01-20 14:47:53,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states. [2021-01-20 14:47:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-20 14:47:53,784 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:53,784 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:47:53,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-01-20 14:47:53,785 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:53,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:53,786 INFO L82 PathProgramCache]: Analyzing trace with hash -936602175, now seen corresponding path program 1 times [2021-01-20 14:47:53,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:53,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49574621] [2021-01-20 14:47:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:53,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49574621] [2021-01-20 14:47:53,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:53,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:53,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733958241] [2021-01-20 14:47:53,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:53,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:53,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:53,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:53,973 INFO L87 Difference]: Start difference. First operand 1072 states. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:54,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:54,097 INFO L93 Difference]: Finished difference Result 1475 states and 4237 transitions. [2021-01-20 14:47:54,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:47:54,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-01-20 14:47:54,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:54,110 INFO L225 Difference]: With dead ends: 1475 [2021-01-20 14:47:54,110 INFO L226 Difference]: Without dead ends: 732 [2021-01-20 14:47:54,111 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:47:54,115 INFO L78 Accepts]: Start accepts. Automaton has 732 states. Word has length 55 [2021-01-20 14:47:54,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:54,115 INFO L481 AbstractCegarLoop]: Abstraction has 732 states. [2021-01-20 14:47:54,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states. [2021-01-20 14:47:54,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-01-20 14:47:54,121 INFO L496 BasicCegarLoop]: Found error trace [2021-01-20 14:47:54,121 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-20 14:47:54,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-01-20 14:47:54,121 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-20 14:47:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-20 14:47:54,122 INFO L82 PathProgramCache]: Analyzing trace with hash -331013291, now seen corresponding path program 2 times [2021-01-20 14:47:54,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-20 14:47:54,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70987892] [2021-01-20 14:47:54,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-20 14:47:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-20 14:47:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-20 14:47:54,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70987892] [2021-01-20 14:47:54,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-20 14:47:54,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-01-20 14:47:54,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433001764] [2021-01-20 14:47:54,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-01-20 14:47:54,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-20 14:47:54,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-01-20 14:47:54,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-01-20 14:47:54,289 INFO L87 Difference]: Start difference. First operand 732 states. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-20 14:47:54,385 INFO L93 Difference]: Finished difference Result 624 states and 1726 transitions. [2021-01-20 14:47:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-01-20 14:47:54,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-01-20 14:47:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-20 14:47:54,386 INFO L225 Difference]: With dead ends: 624 [2021-01-20 14:47:54,386 INFO L226 Difference]: Without dead ends: 0 [2021-01-20 14:47:54,387 INFO L769 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-01-20 14:47:54,387 INFO L78 Accepts]: Start accepts. Automaton has 0 states. Word has length 55 [2021-01-20 14:47:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-20 14:47:54,387 INFO L481 AbstractCegarLoop]: Abstraction has 0 states. [2021-01-20 14:47:54,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-01-20 14:47:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states. [2021-01-20 14:47:54,388 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-20 14:47:54,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-01-20 14:47:54,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 02:47:54 BasicIcfg [2021-01-20 14:47:54,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-20 14:47:54,397 INFO L168 Benchmark]: Toolchain (without parser) took 6609.09 ms. Allocated memory was 302.0 MB in the beginning and 612.4 MB in the end (delta: 310.4 MB). Free memory was 277.2 MB in the beginning and 446.2 MB in the end (delta: -169.0 MB). Peak memory consumption was 142.9 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:54,398 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:47:54,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 744.06 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 245.8 MB in the end (delta: 31.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:54,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.73 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 283.6 MB in the end (delta: -37.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:54,403 INFO L168 Benchmark]: Boogie Preprocessor took 60.16 ms. Allocated memory is still 302.0 MB. Free memory was 283.6 MB in the beginning and 282.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-01-20 14:47:54,404 INFO L168 Benchmark]: RCFGBuilder took 565.15 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 259.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:54,404 INFO L168 Benchmark]: TraceAbstraction took 5105.40 ms. Allocated memory was 302.0 MB in the beginning and 612.4 MB in the end (delta: 310.4 MB). Free memory was 259.5 MB in the beginning and 446.2 MB in the end (delta: -186.7 MB). Peak memory consumption was 125.8 MB. Max. memory is 16.0 GB. [2021-01-20 14:47:54,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 302.0 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 744.06 ms. Allocated memory is still 302.0 MB. Free memory was 277.1 MB in the beginning and 245.8 MB in the end (delta: 31.3 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 125.73 ms. Allocated memory is still 302.0 MB. Free memory was 245.8 MB in the beginning and 283.6 MB in the end (delta: -37.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 60.16 ms. Allocated memory is still 302.0 MB. Free memory was 283.6 MB in the beginning and 282.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 565.15 ms. Allocated memory is still 302.0 MB. Free memory was 282.6 MB in the beginning and 259.5 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5105.40 ms. Allocated memory was 302.0 MB in the beginning and 612.4 MB in the end (delta: 310.4 MB). Free memory was 259.5 MB in the beginning and 446.2 MB in the end (delta: -186.7 MB). Peak memory consumption was 125.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 665 SDtfs, 984 SDslu, 2236 SDs, 0 SdLazy, 254 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9849occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 346 NumberOfCodeBlocks, 346 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 44289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...